Ejector.



UNiTnn STATES PATENT OFFICE.

THOMAS S. SMITH, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO PACIFIC COAST MANUFACTURING COMPANY, OF LOS ANGELES, CALIFORNIA, A

CORPORATION OF CALIFORNIA.

EJ ECTOR.

SPECIFICATION forming part of Letters Patent No. 714,961, dated December 2, 1902.

Application filed June 21,1901. Serial No. 65,505. (No model.)

To all whom it may concern:

Be it known that I, THOMAS S. SMITH, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles, State of California, haveinvented new and useful Improvements in Ejectors, of which the following is a specification.

My invention relates to ejectors for use in pumping oil and water wells by means of compressed air; and the objects thereof are to produce an ejector which presents no obstruction to the flow of the liquid through the delivery-pipe, which will not clog with sand when the Well is not being pumped, can be I5 regulated to control the admission of air into the delivery-pipe, and will evenly distribute the air all around the circumference of the delivery-pipe. I accomplish these objects by the ejector described herein and illustrated in the accompanying drawings, in which Figure 1 is a vertical section of my ejector on the line 1 1 of Fig. 2 with fragments of pipe attached thereto. Figs. 2 and 3 are cross-sections thereof on the lines 2 2 and 3 3,

respectively, of Fig. 1.

In the drawings, A is the delivery-pipe, through which the liquid to be pumped flows in the direction of the arrow when the pump is in action, a section of the delivery-pipe being screwed into the top of the casing of the ejector B. In one side of the casing of the ejector is the air-admission inlet C,with which the air-supply pipe (not shown) which connects the ejector to the air-supply is con- 5 nected. The air-inlet opens into an annular air-chamber D, which surrounds the upper portion of the tubular deflector E, which has an air-tight fit in the flange F of the casing. This deflector is longitudinally movable through flange F to increase or diminish the distance between the top thereof and the delivery-pipe, and thereby control the flow of the air into the delivery-pipe. The distance between the top of the deflector and the hot 5 tom of the delivery-pipe varies with the size of the ejector, but should be such that the air shall be evenly discharged around the entire top of the deflector. The air being thus evenly discharged acts on the exterior porsu tions of the liquid in the pipe and carries the same upward evenly and with less friction on the delivery-pipe than if the air were discharged centrally therein or on one side thereof.

G is the supply-pipe, screwed into the bottom of the ejector, through which the oil flows into the ejector. It can be omitted, if desired.

In the operation of my device the deflector connected to the delivery-pipe and air-supply pipe is set in the well a suitable distance below the normal surface of the liquid to be pumped. The compressed air is then forced through the supply-pipe, and when it enters the ejector the deflector causes its even discharge into the delivery-pipe around the entire inner surface thereof, where the air acts on the liquid therein and causes it to rise with the escaping air, which presses the particles of liquid away from contact with the interior of the delivery-pipe. As the deflector has a central opening therethrough which is practically as large as the opening in the delivery, it will be evident that when the pump stops if the liquid being pumped carries sand the sand will settle through the ejector without clogging it.

If desired, the deflector can be made integral with the casing, and the adjustment between the top of the deflector and the deliv- 8o cry-pipe can be made in screwing the ejector thereon, and when adjusted it can be locked with a lock-nut.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

An ejector, for use in pumping wells with compressed air, comprising a casing adapted to be screwed onto the end of the deliverypipe, said casing having an internally-pro- 9o jecting flange in the lower portion thereof and an annular air-chamber above said flange and an air-inlet opening into said air-chamber;

a tubular deflector in the opening in the flange, havingalongitudinal movement there- 5 through in air-tight contact therewith.

In witness that I claim the foregoing I have hereunto subscribed my name this 13th day of June, 1901.

T. S. SMITH.

Witnesses:

G. E. HARPHAM, JOHN W. RIFENBERIOK. 

